Roy Manzer joined the Royal Flying Corps in 1917. On 28 May 1918, he shot down an Albatros D.V then collided with another, causing it to crash. Manzer was captured on 8 August 1918 when his S.E.5a was shot down while bombing and strafing the German positions during the battle of Amiens. After the war, he returned to Canada and became a barrister.

Distinguished Flying Cross (DFC)

Lieut. Roy Manzer.
While carrying out a solitary patrol he observed a two-seater below him; diving on it he opened fire, and following it down to 1,000 feet, caused it to land outside the aerodrome. During his return to our lines he saw a hostile kite balloon; attacking it as it was being hauled down he closed to point blank range at 300 feet altitude; on reaching the ground, the balloon burst into flames. In addition to the above, this officer has accounted for seven enemy machines, four of which were destroyed and three driven down out of control.